搜索 - 科创

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谐波拓展原理是不是因为当3次谐波混频为 3*（Ws-W0）=IF，而基波混频则变为（Ws-W0）=IF/3，通过数字带通滤波器滤除IF/3的信号成分，所以能进行3次谐波拓展？5次依次类推。

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